Allison Janney added to Chuck Lorre CBS pilot

A comedy pilot for the fall CBS schedule has once again shored up its ranks.

“Mom,”from CBS’ biggest hitmaker Chuck Lorre,already signed Anna Faris for its lead.The show has now also secured Allison Janney.

The show, which Lorre co-wrote with exec producer Eddie Gorodetsky and story editor Gemma Baker of his “Two And A Half Men” team, focuses on Christy (played by Faris), a newly- sober single mother trying to put her life together in the Napa Valley. She will play Christy’s mother Bonnie,considered the source of many of Christy’s past problems,almost certainly because she wasn’t the best mom she could’ve been.

The show landed Emmy winner Janney after three other pilots pursued her.“Mom” reunites Janneyand Lorre; in 2007, Lorre and “Men” co-creator Lee Aronsohn developed a CBS comedy pilot for her to star in. Also that year Janney guest starred on “Two and a Half.”Janney recently attended the Sundance Film Festival, where she had two projects, “Touchy Feely” from Lynn Shelton and “The Way, Way Back,” which was purchased by Fox Searchlight in a big $10 million deal.